VERTAGUS.— Plate II. 



IJab. Indian Seas and Philippines. 



The difference between this species and V. Mariinianus 

 is in the colouring:, which in the former is disposed in 

 bands, and in the latter in spots and flame-like markings. 



Species 10. (Mus. Cuming.) 

 Vertagus semigranosus. Ver. testa subcylindricS, tiir- 

 ritd, spiral'der striata, alhd,ftisco maculatd, varicibus 

 albis ; anfractibus rectiuscidis, ad suturam supra, dis- 

 taiiter nodidosis, infra seriebiis duabi/s nodulorum cinc- 

 tis, ultimo seriebus nodulorum tribus, inter nodulos 



castaneo punctatis ; aperturd obliqud, canali postico 

 porvo, cohtmeUd obscure biplicatd, tubo mnalifero 

 valJe retrorso. 



The half-grained Vertagus. Shell subcvliudrical, 

 turreted, spirally striated, white, brown-spotted, va- 

 rices white; whorls rather straight, with distant 

 nodules above at the suture, below girt with two 

 series of nodules, the last with three series, spotted 

 with chestnut between the nodules ; aperture oblique, 

 the posterior canal small, columella obscurely bipli- 

 cate, canal-tube strongly recurved. 



Lamarck, Anira. sans vert. Cerithiura, no. 18. 



Hab. New Holland. 



